Frequently Asked Questions

What is CrMS?

Every woman has the right to know how her menstrual and fertility cycles function in order to understand the way her body works. Unfortunately, most women have not been provided with this information. 

The CREIGHTON MODEL FertilityCare System (CrMS) is based upon the knowledge and understanding of the naturally-occurring phases of a woman's fertility and infertility. CrMS relies upon the standardized observation and charting of biological markers that are essential to a woman's gynecolocical and reproductive health. Now, a woman can know her cycles and use this information for the maintenance of her health. Further, couples can use this knowledge to plan their family and build their future together.

In CrMS, fertility is observed as a part of health, not disease.  It is a system that is specifically not a natural contraceptive.  Rather, it is a true method of family planning … a method that can be used in two ways, to achieve, as well as, avoid pregnancy.  These principles make this system distinctly different from contraception, artificial or natural.

What are the advantages of CrMS?

The advantages of the CREIGHTON MODEL FertilityCare System (CrMS) are numerous, including the following:


  • CrMS is natural.

  • ​​​​​CrMS is safe. There are no known medical side effects associated with its use.

  • CrMS is inexpensive.

  • ​​​​​CrMS is 96.8-99.5% effective for avoiding pregnancy.

  • CrMS is 76-98% effective for achieving pregnancy in couples of normal fertility.

  • CrMS allows a woman to monitor and maintain both her gynecological and reproductive health.

Another important advantage of CrMS is it is a shared method of fertility regulation. The responsibility for its use is placed equally upon both spouses. To use this system successfully, it is necessary to make accurate observations and to chart them correctly. In addition, one must follow the instructions of the system which depend upon the couple’s decision to either achieve or avoid pregnancy. Also, the couple should be mutually motivated in its use and enter into it with a loving and cooperative spirit. 

Unlike contraceptives, CrMS treats fertility as a normal and healthy process. It does not treat fertility as a disease. The challenge to live in harmony with one’s fertility is often one of the most exciting and meaningful aspects in the use of this system. Most couples find that the love and respect each holds for the other grows as their understanding and appreciation of their fertility increases. It is a system that is firmly based in a respect for human life, human dignity, and the integrity of marriage. Indeed, it is the couples who use this system and their families that benefit from this experience.

Is CrMS Right for Me?

If you are wondering if the Creighton Model FertilityCare System (CrMS) is right for you, below are some questions you should ask yourself:  


  • Do you want to know more about how your menstrual and fertility cycles works?

  • Are you tired of taking birth control pills or using condoms?

  • Are you looking for something to manage your fertility that is entirely natural?

  • Are you tired of having the birth control pill recommended for the treatment of nearly every woman's health problem?

  • Are you interested in a family planning system that also allows you to monitor and maintain your health?

  • Are you looking for a family planning system that has no medical side effects and can provide a high level of couple satisfaction?

  • Are you looking for a solution to a reproductive problem? Infertility? Miscarriage? Stillbirth? Prematurity?

  • Are you looking for a solution to Premenstrual Syndrom (PMS)? Polycystic Ovarian Syndrome (PCOS)? Recurrent Ovarian Cysts? Abnormal Bleeding? Painful Periods?

  • Would you like a family planning system that actually helps strengthen your marriage, where both the the man and the woman work together?

  • Are you looking for a system of family planning that is morally acceptable to you and your spouse?